/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2017 Marc de Verdelhan, 2017-2021 Ta4j Organization & respective
 * authors (see AUTHORS)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package org.ta4j.core.cost;

import org.ta4j.core.Position;
import org.ta4j.core.num.Num;

public class ZeroCostModel implements CostModel {

    private static final long serialVersionUID = -331246208177262596L;

    /**
     * Constructor for a trading cost-free model.
     *
     */
    public ZeroCostModel() {
    }

    public Num calculate(Position position) {
        return calculate(position, 0);
    }

    public Num calculate(Position position, int currentIndex) {
        return position.getEntry().getPricePerAsset().numOf(0);
    }

    public Num calculate(Num price, Num amount) {
        return price.numOf(0);
    }

    /**
     * Evaluate if two models are equal
     * 
     * @param otherModel model to compare with
     */
    public boolean equals(CostModel otherModel) {
        boolean equality = false;
        if (this.getClass().equals(otherModel.getClass())) {
            equality = true;
        }
        return equality;
    }
}
